7 signs you're working with a psychopath.

They constantly use past tense.

Researchers have found psychopaths use past tense more than present tense, which could signal that they're detached from the present.

They use cause-and-effect statements.

"Because psychopaths are entitled and see the world and others as theirs for the taking, researchers at the University of British Columbia found that they used more words such as 'because' and 'so that'" since they tend to rationalize their actions with their own logic.

They talk excessively about their basic needs

Since they're typically not occupied with anything else, psychopaths think about their basic needs a lot, such as food, shelter, and clothing. When talking about their basic needs, psychopaths tend to use twice as many words as usual or provide too much information.

They don't take responsibility or blame.

Psychopaths usually think that they're the victims, which comes from their sense of entitlement.
"The psychopath will speak of himself in grandiose terms while blaming others and taking no responsibility for his actions," You can hear this in the lack and emotion of their voice.

They contradict themselves often.

This may even happen within the same sentence. "[Psychopaths] will lie or omit information when you ask them a question, but they may tell you the truth if you rephrase the question slightly. Researchers have discovered that this has to do with the particular way their brain is wired,"

They are bad at crying.

"When [Susan Smith] gave a press conference and cried about her missing children, her fake tears were actually what raised suspicions that she was the killer,"
When psychopaths cry, they will often wipe underneath each eye, one at a time. "When people cry genuine tears they cry with both eyes, and so they will tend to wipe both eyes at once."

Their body launguage is different than what they say.

Psychopaths will often say one thing, but their body language will tell a different story. For example, while saying the word "yes," the psychopath could be shaking their head no.